Matrix Coupled All-in-One Magnetics for PWM Power Conversion

Ping Wang, Daniel Zhou, Vincent Yang, Minjie Chen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper investigates the matrix coupled "all-in-one"magnetic structure that combines both series coupling and parallel coupling for pulse-width-modulated (PWM) power conversion. A systematic analysis of the current ripple reduction mechanism is performed. The transient performance of the matrix coupled inductor is demystified, providing guidance on the analysis of converter dynamics and large- or small-signal modeling. To quantify the benefits of matrix coupling, a figure of merit is defined by comparing the current ripple of a matrix coupled inductor to that of a discrete inductor given the same transient speed. The comparison results indicate that a higher number of phases and a stronger matrix coupling coefficient amplify the benefits of matrix coupling. A 1 V-to-5 V input, 1 V-to-5 V output, four-phase matrix coupled synchronous SEPIC converter with planar PCB integrated magnetics was built and tested. The experimental results validate the matrix coupling concept and the theoretical analysis, opening the possibility towards wide adoption of "All-in-One-Magnetics"in PWM topologies.

Original languageEnglish (US)
Title of host publication2021 IEEE 22nd Workshop on Control and Modelling of Power Electronics, COMPEL 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781665436359
DOIs
StatePublished - 2021
Event22nd IEEE Workshop on Control and Modelling of Power Electronics, COMPEL 2021 - Cartagena, Colombia
Duration: Nov 2 2021Nov 5 2021

Publication series

Name2021 IEEE 22nd Workshop on Control and Modelling of Power Electronics, COMPEL 2021

Conference

Conference22nd IEEE Workshop on Control and Modelling of Power Electronics, COMPEL 2021
Country/TerritoryColombia
CityCartagena
Period11/2/2111/5/21

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Electrical and Electronic Engineering
  • Energy Engineering and Power Technology

Keywords

  • Coupled inductor
  • Current ripple reduction
  • Inductance dual model
  • Integrated magnetics
  • Multiphase interleaving
  • Transfer function

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